ieee80211_netbsd.c revision 1.4
1 /* $NetBSD: ieee80211_netbsd.c,v 1.4 2005/07/03 20:44:46 dyoung Exp $ */ 2 /*- 3 * Copyright (c) 2003-2005 Sam Leffler, Errno Consulting 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 #ifdef __FreeBSD__ 31 __FBSDID("$FreeBSD: src/sys/net80211/ieee80211_freebsd.c,v 1.6 2005/01/22 20:29:23 sam Exp $"); 32 #else 33 __KERNEL_RCSID(0, "$NetBSD: ieee80211_netbsd.c,v 1.4 2005/07/03 20:44:46 dyoung Exp $"); 34 #endif 35 36 /* 37 * IEEE 802.11 support (FreeBSD-specific code) 38 */ 39 #include <sys/param.h> 40 #include <sys/kernel.h> 41 #include <sys/systm.h> 42 #include <sys/mbuf.h> 43 #include <sys/proc.h> 44 #include <sys/sysctl.h> 45 46 #include <machine/stdarg.h> 47 48 #include <sys/socket.h> 49 50 #include <net/if.h> 51 #include <net/if_media.h> 52 #include <net/if_ether.h> 53 #include <net/route.h> 54 55 #include <net80211/ieee80211_netbsd.h> 56 #include <net80211/ieee80211_var.h> 57 #include <net80211/ieee80211_sysctl.h> 58 59 #define LOGICALLY_EQUAL(x, y) (!(x) == !(y)) 60 61 static void ieee80211_sysctl_fill_node(struct ieee80211_node *, 62 struct ieee80211_node_sysctl *, int, struct ieee80211_channel *, int); 63 static struct ieee80211_node *ieee80211_node_walknext( 64 struct ieee80211_node_walk *); 65 static struct ieee80211_node *ieee80211_node_walkfirst( 66 struct ieee80211_node_walk *, u_short); 67 static int ieee80211_sysctl_node(SYSCTLFN_ARGS); 68 69 #ifdef IEEE80211_DEBUG 70 int ieee80211_debug = 0; 71 #endif 72 73 static int 74 ieee80211_sysctl_inact(SYSCTLFN_ARGS) 75 { 76 int error, t; 77 struct sysctlnode node; 78 79 node = *rnode; 80 /* sysctl_lookup copies the product from t. Then, it 81 * copies the new value onto t. 82 */ 83 t = *(int*)rnode->sysctl_data * IEEE80211_INACT_WAIT; 84 node.sysctl_data = &t; 85 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 86 if (error || newp == NULL) 87 return (error); 88 89 /* The new value was in seconds. Convert to inactivity-wait 90 * intervals. There are IEEE80211_INACT_WAIT seconds per 91 * interval. 92 */ 93 *(int*)rnode->sysctl_data = t / IEEE80211_INACT_WAIT; 94 95 return (0); 96 } 97 98 static int 99 ieee80211_sysctl_parent(SYSCTLFN_ARGS) 100 { 101 struct ieee80211com *ic; 102 char pname[IFNAMSIZ]; 103 struct sysctlnode node; 104 105 node = *rnode; 106 ic = node.sysctl_data; 107 strncpy(pname, ic->ic_ifp->if_xname, IFNAMSIZ); 108 node.sysctl_data = pname; 109 return sysctl_lookup(SYSCTLFN_CALL(&node)); 110 } 111 112 /* 113 * Create or get top of sysctl tree net.link.ieee80211. 114 */ 115 static const struct sysctlnode * 116 ieee80211_sysctl_treetop(struct sysctllog **log) 117 { 118 int rc; 119 const struct sysctlnode *rnode; 120 121 if ((rc = sysctl_createv(log, 0, NULL, &rnode, 122 CTLFLAG_PERMANENT, CTLTYPE_NODE, "net", NULL, 123 NULL, 0, NULL, 0, CTL_NET, CTL_EOL)) != 0) 124 goto err; 125 126 if ((rc = sysctl_createv(log, 0, &rnode, &rnode, 127 CTLFLAG_PERMANENT, CTLTYPE_NODE, "link", 128 "link-layer statistics and controls", 129 NULL, 0, NULL, 0, PF_LINK, CTL_EOL)) != 0) 130 goto err; 131 132 if ((rc = sysctl_createv(log, 0, &rnode, &rnode, 133 CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee80211", 134 "IEEE 802.11 WLAN statistics and controls", 135 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 136 goto err; 137 138 return rnode; 139 err: 140 printf("%s: sysctl_createv failed, rc = %d\n", __func__, rc); 141 return NULL; 142 } 143 144 void 145 ieee80211_sysctl_attach(struct ieee80211com *ic) 146 { 147 int rc; 148 const struct sysctlnode *cnode, *rnode; 149 char num[sizeof("vap") + 14]; /* sufficient for 32 bits */ 150 151 if ((rnode = ieee80211_sysctl_treetop(NULL)) == NULL) 152 return; 153 154 snprintf(num, sizeof(num), "vap%u", ic->ic_vap); 155 156 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &rnode, 157 CTLFLAG_PERMANENT, CTLTYPE_NODE, num, SYSCTL_DESCR("virtual AP"), 158 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 159 goto err; 160 161 /* control debugging printfs */ 162 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 163 CTLFLAG_PERMANENT|CTLFLAG_READONLY, CTLTYPE_STRING, 164 "parent", SYSCTL_DESCR("parent device"), 165 ieee80211_sysctl_parent, 0, ic, IFNAMSIZ, CTL_CREATE, 166 CTL_EOL)) != 0) 167 goto err; 168 169 #ifdef IEEE80211_DEBUG 170 /* control debugging printfs */ 171 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 172 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 173 "debug", SYSCTL_DESCR("control debugging printfs"), 174 NULL, ieee80211_debug, &ic->ic_debug, 0, 175 CTL_CREATE, CTL_EOL)) != 0) 176 goto err; 177 #endif 178 /* XXX inherit from tunables */ 179 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 180 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 181 "inact_run", SYSCTL_DESCR("station inactivity timeout (sec)"), 182 ieee80211_sysctl_inact, 0, &ic->ic_inact_run, 0, 183 CTL_CREATE, CTL_EOL)) != 0) 184 goto err; 185 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 186 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 187 "inact_probe", 188 SYSCTL_DESCR("station inactivity probe timeout (sec)"), 189 ieee80211_sysctl_inact, 0, &ic->ic_inact_probe, 0, 190 CTL_CREATE, CTL_EOL)) != 0) 191 goto err; 192 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 193 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 194 "inact_auth", 195 SYSCTL_DESCR("station authentication timeout (sec)"), 196 ieee80211_sysctl_inact, 0, &ic->ic_inact_auth, 0, 197 CTL_CREATE, CTL_EOL)) != 0) 198 goto err; 199 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 200 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 201 "inact_init", 202 SYSCTL_DESCR("station initial state timeout (sec)"), 203 ieee80211_sysctl_inact, 0, &ic->ic_inact_init, 0, 204 CTL_CREATE, CTL_EOL)) != 0) 205 goto err; 206 if ((rc = sysctl_createv(&ic->ic_sysctllog, 0, &rnode, &cnode, 207 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 208 "driver_caps", SYSCTL_DESCR("driver capabilities"), 209 NULL, 0, &ic->ic_caps, 0, CTL_CREATE, CTL_EOL)) != 0) 210 goto err; 211 212 return; 213 err: 214 printf("%s: sysctl_createv failed, rc = %d\n", __func__, rc); 215 } 216 217 void 218 ieee80211_sysctl_detach(struct ieee80211com *ic) 219 { 220 sysctl_teardown(&ic->ic_sysctllog); 221 } 222 223 /* 224 * Pointers for testing: 225 * 226 * If there are no interfaces, or else no 802.11 interfaces, 227 * ieee80211_node_walkfirst must return NULL. 228 * 229 * If there is any single 802.11 interface, ieee80211_node_walkfirst 230 * must not return NULL. 231 */ 232 static struct ieee80211_node * 233 ieee80211_node_walkfirst(struct ieee80211_node_walk *nw, u_short if_index) 234 { 235 (void)memset(nw, 0, sizeof(*nw)); 236 237 nw->nw_ifindex = if_index; 238 239 LIST_FOREACH(nw->nw_ic, &ieee80211com_head, ic_list) { 240 if (if_index != 0 && nw->nw_ic->ic_ifp->if_index != if_index) 241 continue; 242 if (!TAILQ_EMPTY(&nw->nw_ic->ic_sta.nt_node)) 243 nw->nw_nt = &nw->nw_ic->ic_sta; 244 else if (!TAILQ_EMPTY(&nw->nw_ic->ic_scan.nt_node)) 245 nw->nw_nt = &nw->nw_ic->ic_scan; 246 else if (nw->nw_ic->ic_bss == NULL) 247 continue; 248 break; 249 } 250 251 if (nw->nw_ic == NULL) 252 return NULL; 253 254 if (nw->nw_nt == NULL) 255 nw->nw_ni = nw->nw_ic->ic_bss; 256 else 257 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 258 259 return nw->nw_ni; 260 } 261 262 static struct ieee80211_node * 263 ieee80211_node_walknext(struct ieee80211_node_walk *nw) 264 { 265 if (nw->nw_nt != NULL) 266 nw->nw_ni = TAILQ_NEXT(nw->nw_ni, ni_list); 267 else 268 nw->nw_ni = NULL; 269 270 while (nw->nw_ni == NULL) { 271 if (nw->nw_nt == &nw->nw_ic->ic_sta) { 272 nw->nw_nt = &nw->nw_ic->ic_scan; 273 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 274 continue; 275 } else if (nw->nw_nt == &nw->nw_ic->ic_scan) { 276 nw->nw_nt = NULL; 277 nw->nw_ni = nw->nw_ic->ic_bss; 278 continue; 279 } 280 KASSERT(nw->nw_nt == NULL); 281 if (nw->nw_ifindex != 0) 282 return NULL; 283 284 nw->nw_ic = LIST_NEXT(nw->nw_ic, ic_list); 285 if (nw->nw_ic == NULL) 286 return NULL; 287 288 nw->nw_nt = &nw->nw_ic->ic_sta; 289 nw->nw_ni = TAILQ_FIRST(&nw->nw_nt->nt_node); 290 } 291 292 return nw->nw_ni; 293 } 294 295 static void 296 ieee80211_sysctl_fill_node(struct ieee80211_node *ni, 297 struct ieee80211_node_sysctl *ns, int ifindex, 298 struct ieee80211_channel *chan0, int is_bss) 299 { 300 ns->ns_ifindex = ifindex; 301 ns->ns_capinfo = ni->ni_capinfo; 302 ns->ns_flags = (is_bss) ? IEEE80211_NODE_SYSCTL_F_BSS : 0; 303 (void)memcpy(ns->ns_macaddr, ni->ni_macaddr, sizeof(ns->ns_macaddr)); 304 (void)memcpy(ns->ns_bssid, ni->ni_bssid, sizeof(ns->ns_bssid)); 305 if (ni->ni_chan != IEEE80211_CHAN_ANYC) { 306 ns->ns_freq = ni->ni_chan->ic_freq; 307 ns->ns_chanflags = ni->ni_chan->ic_flags; 308 ns->ns_chanidx = ni->ni_chan - chan0; 309 } else { 310 ns->ns_freq = ns->ns_chanflags = 0; 311 ns->ns_chanidx = 0; 312 } 313 ns->ns_rssi = ni->ni_rssi; 314 ns->ns_esslen = ni->ni_esslen; 315 (void)memcpy(ns->ns_essid, ni->ni_essid, sizeof(ns->ns_essid)); 316 ns->ns_erp = ni->ni_erp; 317 ns->ns_associd = ni->ni_associd; 318 ns->ns_inact = ni->ni_inact * IEEE80211_INACT_WAIT; 319 ns->ns_rstamp = ni->ni_rstamp; 320 ns->ns_rates = ni->ni_rates; 321 ns->ns_txrate = ni->ni_txrate; 322 ns->ns_intval = ni->ni_intval; 323 (void)memcpy(ns->ns_tstamp, &ni->ni_tstamp, sizeof(ns->ns_tstamp)); 324 ns->ns_txseq = ni->ni_txseqs[0]; 325 ns->ns_rxseq = ni->ni_rxseqs[0]; 326 ns->ns_fhdwell = ni->ni_fhdwell; 327 ns->ns_fhindex = ni->ni_fhindex; 328 ns->ns_fails = ni->ni_fails; 329 } 330 331 /* Between two examinations of the sysctl tree, I expect each 332 * interface to add no more than 5 nodes. 333 */ 334 #define IEEE80211_SYSCTL_NODE_GROWTH 5 335 336 static int 337 ieee80211_sysctl_node(SYSCTLFN_ARGS) 338 { 339 struct ieee80211_node_walk nw; 340 struct ieee80211_node *ni; 341 struct ieee80211_node_sysctl ns; 342 char *dp; 343 u_int cur_ifindex, ifcount, ifindex, last_ifindex, op, arg, hdr_type; 344 size_t len, needed, eltsize, out_size; 345 int error, s, saw_bss = 0, nelt; 346 347 if (namelen == 1 && name[0] == CTL_QUERY) 348 return (sysctl_query(SYSCTLFN_CALL(rnode))); 349 350 if (namelen != IEEE80211_SYSCTL_NODENAMELEN) 351 return (EINVAL); 352 353 /* ifindex.op.arg.header-type.eltsize.nelt */ 354 dp = oldp; 355 len = (oldp != NULL) ? *oldlenp : 0; 356 ifindex = name[IEEE80211_SYSCTL_NODENAME_IF]; 357 op = name[IEEE80211_SYSCTL_NODENAME_OP]; 358 arg = name[IEEE80211_SYSCTL_NODENAME_ARG]; 359 hdr_type = name[IEEE80211_SYSCTL_NODENAME_TYPE]; 360 eltsize = name[IEEE80211_SYSCTL_NODENAME_ELTSIZE]; 361 nelt = name[IEEE80211_SYSCTL_NODENAME_ELTCOUNT]; 362 out_size = MIN(sizeof(ns), eltsize); 363 364 if (op != IEEE80211_SYSCTL_OP_ALL || arg != 0 || 365 hdr_type != IEEE80211_SYSCTL_T_NODE || eltsize < 1 || nelt < 0) 366 return (EINVAL); 367 368 error = 0; 369 needed = 0; 370 ifcount = 0; 371 last_ifindex = 0; 372 373 s = splnet(); 374 375 for (ni = ieee80211_node_walkfirst(&nw, ifindex); ni != NULL; 376 ni = ieee80211_node_walknext(&nw)) { 377 struct ieee80211com *ic; 378 379 ic = nw.nw_ic; 380 cur_ifindex = ic->ic_ifp->if_index; 381 382 if (cur_ifindex != last_ifindex) { 383 ifcount++; 384 last_ifindex = cur_ifindex; 385 } 386 387 if (nelt <= 0) 388 continue; 389 390 if (saw_bss && ni == ic->ic_bss) 391 continue; 392 else if (ni == ic->ic_bss) 393 saw_bss = 1; 394 if (len >= eltsize) { 395 ieee80211_sysctl_fill_node(ni, &ns, cur_ifindex, 396 &ic->ic_channels[0], ni == ic->ic_bss); 397 error = copyout(&ns, dp, out_size); 398 if (error) 399 goto cleanup; 400 dp += eltsize; 401 len -= eltsize; 402 } 403 needed += eltsize; 404 if (nelt != INT_MAX) 405 nelt--; 406 } 407 cleanup: 408 splx(s); 409 410 *oldlenp = needed; 411 if (oldp == NULL) 412 *oldlenp += ifcount * IEEE80211_SYSCTL_NODE_GROWTH * eltsize; 413 414 return (error); 415 } 416 417 /* 418 * Setup sysctl(3) MIB, net.ieee80211.* 419 * 420 * TBD condition CTLFLAG_PERMANENT on being an LKM or not 421 */ 422 SYSCTL_SETUP(sysctl_ieee80211, "sysctl ieee80211 subtree setup") 423 { 424 int rc; 425 const struct sysctlnode *cnode, *rnode; 426 427 if ((rnode = ieee80211_sysctl_treetop(clog)) == NULL) 428 return; 429 430 if ((rc = sysctl_createv(clog, 0, &rnode, NULL, 431 CTLFLAG_PERMANENT, CTLTYPE_NODE, "nodes", "client/peer stations", 432 ieee80211_sysctl_node, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 433 goto err; 434 435 #ifdef IEEE80211_DEBUG 436 /* control debugging printfs */ 437 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 438 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 439 "debug", SYSCTL_DESCR("control debugging printfs"), 440 NULL, 0, &ieee80211_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 441 goto err; 442 #endif /* IEEE80211_DEBUG */ 443 444 return; 445 err: 446 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 447 } 448 449 int 450 ieee80211_node_dectestref(struct ieee80211_node *ni) 451 { 452 int rc, s; 453 s = splnet(); 454 if (--ni->ni_refcnt == 0) { 455 rc = 1; 456 ni->ni_refcnt = 1; 457 } else 458 rc = 0; 459 splx(s); 460 return rc; 461 } 462 463 void 464 if_printf(struct ifnet *ifp, const char *fmt, ...) 465 { 466 va_list ap; 467 va_start(ap, fmt); 468 469 printf("%s: ", ifp->if_xname); 470 vprintf(fmt, ap); 471 472 va_end(ap); 473 return; 474 } 475 476 struct mbuf * 477 m_getcl(int how, int type, int flags) 478 { 479 struct mbuf *m; 480 481 if ((flags & M_PKTHDR) != 0) 482 MGETHDR(m, how, type); 483 else 484 MGET(m, how, type); 485 486 if (m == NULL) 487 return NULL; 488 489 MCLGET(m, flags); 490 491 if ((m->m_flags & M_EXT) == 0) { 492 m_free(m); 493 return NULL; 494 } 495 return m; 496 } 497 498 /* 499 * Append the specified data to the indicated mbuf chain, 500 * Extend the mbuf chain if the new data does not fit in 501 * existing space. 502 * 503 * Return 1 if able to complete the job; otherwise 0. 504 */ 505 int 506 m_append(struct mbuf *m0, int len, caddr_t cp) 507 { 508 struct mbuf *m, *n; 509 int remainder, space; 510 511 for (m = m0; m->m_next != NULL; m = m->m_next) 512 ; 513 remainder = len; 514 space = M_TRAILINGSPACE(m); 515 if (space > 0) { 516 /* 517 * Copy into available space. 518 */ 519 if (space > remainder) 520 space = remainder; 521 memmove(mtod(m, caddr_t) + m->m_len, cp, space); 522 m->m_len += space; 523 cp += space, remainder -= space; 524 } 525 while (remainder > 0) { 526 /* 527 * Allocate a new mbuf; could check space 528 * and allocate a cluster instead. 529 */ 530 n = m_get(M_DONTWAIT, m->m_type); 531 if (n == NULL) 532 break; 533 n->m_len = min(MLEN, remainder); 534 memmove(mtod(n, caddr_t), cp, n->m_len); 535 cp += n->m_len, remainder -= n->m_len; 536 m->m_next = n; 537 m = n; 538 } 539 if (m0->m_flags & M_PKTHDR) 540 m0->m_pkthdr.len += len - remainder; 541 return (remainder == 0); 542 } 543 544 /* 545 * Allocate and setup a management frame of the specified 546 * size. We return the mbuf and a pointer to the start 547 * of the contiguous data area that's been reserved based 548 * on the packet length. The data area is forced to 32-bit 549 * alignment and the buffer length to a multiple of 4 bytes. 550 * This is done mainly so beacon frames (that require this) 551 * can use this interface too. 552 */ 553 struct mbuf * 554 ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen) 555 { 556 struct mbuf *m; 557 u_int len; 558 559 /* 560 * NB: we know the mbuf routines will align the data area 561 * so we don't need to do anything special. 562 */ 563 /* XXX 4-address frame? */ 564 len = roundup(sizeof(struct ieee80211_frame) + pktlen, 4); 565 IASSERT(len <= MCLBYTES, ("802.11 mgt frame too large: %u", len)); 566 if (len <= MHLEN) { 567 m = m_gethdr(M_NOWAIT, MT_HEADER); 568 /* 569 * Align the data in case additional headers are added. 570 * This should only happen when a WEP header is added 571 * which only happens for shared key authentication mgt 572 * frames which all fit in MHLEN. 573 */ 574 if (m != NULL) 575 MH_ALIGN(m, len); 576 } else 577 m = m_getcl(M_NOWAIT, MT_HEADER, M_PKTHDR); 578 if (m != NULL) { 579 m->m_data += sizeof(struct ieee80211_frame); 580 *frm = m->m_data; 581 } 582 return m; 583 } 584 585 void 586 get_random_bytes(void *p, size_t n) 587 { 588 u_int8_t *dp = p; 589 590 while (n > 0) { 591 u_int32_t v = arc4random(); 592 size_t nb = n > sizeof(u_int32_t) ? sizeof(u_int32_t) : n; 593 (void)memcpy(dp, &v, nb); 594 dp += sizeof(u_int32_t), n -= nb; 595 } 596 } 597 598 void 599 ieee80211_notify_node_join(struct ieee80211com *ic, struct ieee80211_node *ni, int newassoc) 600 { 601 struct ifnet *ifp = ic->ic_ifp; 602 struct ieee80211_join_event iev; 603 604 IEEE80211_DPRINTF(ic, IEEE80211_MSG_NODE, "%s: %snode %s join\n", 605 ifp->if_xname, (ni == ic->ic_bss) ? "bss " : "", 606 ether_sprintf(ni->ni_macaddr)); 607 608 if (ni == ic->ic_bss) { 609 memset(&iev, 0, sizeof(iev)); 610 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_bssid); 611 rt_ieee80211msg(ifp, newassoc ? 612 RTM_IEEE80211_ASSOC : RTM_IEEE80211_REASSOC, 613 &iev, sizeof(iev)); 614 if_link_state_change(ifp, LINK_STATE_UP); 615 } else if (newassoc) { 616 /* fire off wireless event only for new station */ 617 memset(&iev, 0, sizeof(iev)); 618 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_macaddr); 619 rt_ieee80211msg(ifp, RTM_IEEE80211_JOIN, &iev, sizeof(iev)); 620 } 621 } 622 623 void 624 ieee80211_notify_node_leave(struct ieee80211com *ic, struct ieee80211_node *ni) 625 { 626 struct ifnet *ifp = ic->ic_ifp; 627 struct ieee80211_leave_event iev; 628 629 IEEE80211_DPRINTF(ic, IEEE80211_MSG_NODE, "%s: %snode %s leave\n", 630 ifp->if_xname, (ni == ic->ic_bss) ? "bss " : "", 631 ether_sprintf(ni->ni_macaddr)); 632 633 if (ni == ic->ic_bss) { 634 rt_ieee80211msg(ifp, RTM_IEEE80211_DISASSOC, NULL, 0); 635 if_link_state_change(ifp, LINK_STATE_DOWN); 636 } else { 637 /* fire off wireless event station leaving */ 638 memset(&iev, 0, sizeof(iev)); 639 IEEE80211_ADDR_COPY(iev.iev_addr, ni->ni_macaddr); 640 rt_ieee80211msg(ifp, RTM_IEEE80211_LEAVE, &iev, sizeof(iev)); 641 } 642 } 643 644 void 645 ieee80211_notify_scan_done(struct ieee80211com *ic) 646 { 647 struct ifnet *ifp = ic->ic_ifp; 648 649 IEEE80211_DPRINTF(ic, IEEE80211_MSG_SCAN, 650 "%s: notify scan done\n", ic->ic_ifp->if_xname); 651 652 /* dispatch wireless event indicating scan completed */ 653 rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0); 654 } 655 656 void 657 ieee80211_notify_replay_failure(struct ieee80211com *ic, 658 const struct ieee80211_frame *wh, const struct ieee80211_key *k, 659 u_int64_t rsc) 660 { 661 struct ifnet *ifp = ic->ic_ifp; 662 663 IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, 664 "[%s] %s replay detected <rsc %ju, csc %ju, keyix %u>\n", 665 ether_sprintf(wh->i_addr2), k->wk_cipher->ic_name, 666 (intmax_t) rsc, (intmax_t) k->wk_keyrsc, k->wk_keyix); 667 668 if (ifp != NULL) { /* NB: for cipher test modules */ 669 struct ieee80211_replay_event iev; 670 671 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 672 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 673 iev.iev_cipher = k->wk_cipher->ic_cipher; 674 iev.iev_keyix = k->wk_keyix; 675 iev.iev_keyrsc = k->wk_keyrsc; 676 iev.iev_rsc = rsc; 677 rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev)); 678 } 679 } 680 681 void 682 ieee80211_notify_michael_failure(struct ieee80211com *ic, 683 const struct ieee80211_frame *wh, u_int keyix) 684 { 685 struct ifnet *ifp = ic->ic_ifp; 686 687 IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, 688 "[%s] michael MIC verification failed <keyix %u>\n", 689 ether_sprintf(wh->i_addr2), keyix); 690 ic->ic_stats.is_rx_tkipmic++; 691 692 if (ifp != NULL) { /* NB: for cipher test modules */ 693 struct ieee80211_michael_event iev; 694 695 IEEE80211_ADDR_COPY(iev.iev_dst, wh->i_addr1); 696 IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2); 697 iev.iev_cipher = IEEE80211_CIPHER_TKIP; 698 iev.iev_keyix = keyix; 699 rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev)); 700 } 701 } 702 703 void 704 ieee80211_load_module(const char *modname) 705 { 706 #ifdef notyet 707 struct thread *td = curthread; 708 709 if (suser(td) == 0 && securelevel_gt(td->td_ucred, 0) == 0) { 710 mtx_lock(&Giant); 711 (void) linker_load_module(modname, NULL, NULL, NULL, NULL); 712 mtx_unlock(&Giant); 713 } 714 #else 715 printf("%s: load the %s module by hand for now.\n", __func__, modname); 716 #endif 717 } 718
Indexes created Fri Sep 26 20:09:58 GMT 2025